Cavity type automatic special-shaped body reversing mechanism

Abstract

The invention discloses a cavity type automatic special-shaped body reversing mechanism and belongs to the technical field of automatic reversing of oil cylinders. According to the cavity type automatic special-shaped body reversing mechanism, a special-shaped body is adopted for reversing, a dead point is prevented from being generated, a connecting rod makes a boss move under the control of a hydraulic cylinder piston, and then a two-position four-way reversing valve is controlled to act. According to the technical scheme, the cavity type automatic special-shaped body reversing mechanism is characterized in that an A cylinder and a B cylinder are respectively provided with a cavity I, a cavity II, a cavity III, a cavity IV, a cavity V and a cavity VI in sequence, the cavities II and the cavities V are all hollow, pistons of three cylinder bodies of the A cylinder are connected through a piston rod, so that linkage of the three pistons is achieved, and pistons of three cylinder bodies of the B cylinder are connected through a piston rod, so that linkage of the three pistons is achieved; sliding blocks are arranged on the A cylinder and the B cylinder, protrusions are arranged on the tops of the sliding blocks, the sliding blocks are pushed by the pistons located on the two sides of the A cylinder and the B cylinder to move leftwards and rightwards, and the protrusions move leftwards and rightwards to shift a reversing valve A and a reversing valve B to achieve reversing. The cavity type automatic special-shaped body reversing mechanism can be widely applied to the field of hydraulic automatic reversing.

Description

technical field [0001] The invention discloses a cavity-type automatic different-body reversing mechanism, which belongs to the technical field of oil cylinder automatic reversing. Background technique [0002] China is a large coal-producing country, a country that relies heavily on coal energy, and is also a country with a large number of mining disasters. The main causes of mining disasters are man-made reasons such as illegal mining of coal mines, production errors, equipment aging and malfunctions. [0003] When coal mines are mined underground, due to the possibility of gas leakage during the mining process, the gas mixes with air, oxidizes rapidly at high temperature, and forms a shock wave phenomenon. China's coal mine gas explosions are mainly electric sparks and blasting, and the main place is the mining face , the instantaneous temperature generated by the gas explosion is high, the pressure expands quickly, and the gas near the explosion element impacts outward a...

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Problems solved by technology

In addition, the smooth operation of the hydraulic equipment on the positioning machine is also an important indicator of the working performance of the positioning machine. At present, the automatic control system of the hydraulic system of the positioning machine has large pulses and poor stability, which seriously affects the working performance of the positioning machine

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